TM 1-1520-238-23
7-104
Change 1
7.31.
HYDRAULIC HAND PUMP FUNCTIONAL CHECK (AVIM) continued
NOTE
Slight wetting of seals insufficient to form
a drop in 5 minutes is not considered ex-
ternal leakage.
c. Perform pressure proof test.
(1) Remove cap (6) from PRI RES port (7).
(2) Move lever (8) to fill utility accumulator posi-
tion (B).
(3) Install pressure line (9) on PRI RES port (7).
(4) Increase line (9) pressure to 4500 PSI.
(5) Hold pressure for 5 minutes (para 7.1).
(6) Decrease pressure to 0 PSI.
d. Perform return pressure proof test.
(1) Remove cap (10) from FILL port (11).
(2) Move lever (8) to fill utility reservoir position
A.
(3) Install pressure line (12) on FILL port (11).
(4) Increase pressure in lines (9) and (12) to
2250 PSI and hold for 5 minutes (para 7.1).
(5) Decrease pressure to 0 PSI.
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8
B
M04-2678-11
7
6
A
PRESSURE LINE
9
UTIL
RES
PRI
RES
UTIL
ACC
FILL
M04-2678-12
10
A
B
8
11
PRESSURE LINE
12
PRESSURE LINE
9
UTIL
RES
PRI
RES
UTIL
ACC
FILL